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Sending SMS text messages

SMS text message overview

  • Senders transmit messages by using a browser or email free of charge.
    • Send to and receive from email addresses. Iridium subscribers are able to receive SMS messages via, where MSISDN is their personal phone number.
  • Satellite phone number format is: 8816 xxxx xxxx.
  • Messages are free to receive on the satellite phone.
  • Text is limited to 160 characters per message. However, Dept. of Defense users are limited to 120 character message length.
  • Messages will be stored until delivered (up to 8 days).
  • Click here to send a message to an Iridium Satellite phone free of charge.
  • Your Satellite phone has been configured to allow messages to be sent.



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